Smart Code Analyzer

Professional-grade Java code analysis tool for enterprise-level quality assessment

Documentation • Quick Start • Features • API Reference • Contributing

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Overview

Smart Code Analyzer is a comprehensive Java code analysis tool designed for enterprise-level code quality assessment. It provides deep insights into code complexity, maintainability, dependencies, and identifies potential code smells with professional-grade reporting capabilities.

Why Choose Smart Code Analyzer?

Enterprise-Ready | Multi-threaded Processing | Comprehensive Analysis | Extensible Architecture

• High Performance: Multi-threaded analysis engine processes thousands of files in seconds
• Professional Metrics: Advanced metrics including cognitive complexity, maintainability index, and technical debt analysis
• Smart Detection: Intelligent code smell detection with customizable patterns
• Architecture Analysis: Comprehensive dependency mapping and architectural issue identification
• Export Capabilities: Generate reports in multiple formats (HTML, JSON, XML, TXT)
• Zero Configuration: Works out of the box with sensible defaults

Table of Contents

• Quick Start
• Key Features
• Architecture
• Installation & Setup
• Usage Guide
• Features Deep Dive
• API Reference
• Configuration
• Performance
• Extending the Tool
• Troubleshooting
• Contributing
• License

Quick Start

# Clone and build
git clone https://github.com/SafwanGanz/code_analyzer.git
cd code_analyzer
javac -d build -cp src src/main/java/com/codeanalyzer/**/*.java
jar cfm code.jar MANIFEST.MF -C build .

# Run analysis
java -jar SmartCodeAnalyzer.jar

Analyze Your First Project

1. Start the application: java -jar code.jar
2. Choose option 1: "Analyze Directory"
3. Enter your Java project path
4. View comprehensive analysis results

Key Features

Advanced Analysis Engine Cyclomatic Complexity measurement Cognitive Complexity analysis Maintainability Index scoring (0-100 scale) Technical Debt quantification Code Smell detection with 15+ patterns

Performance & Scalability Multi-threaded parallel processing Memory optimized for large codebases Streaming analysis for massive projects Configurable thread pools Efficient resource management

Supported Code Quality Metrics

Metric	Description	Range
Cyclomatic Complexity	Measures code path complexity	1+ (Lower is better)
Cognitive Complexity	Human-perceived code difficulty	1+ (Lower is better)
Maintainability Index	Overall code maintainability score	0-100 (Higher is better)
Technical Debt Ratio	Ratio of problematic to clean code	0-1 (Lower is better)
Lines of Code	Total lines including comments	N/A
Method Count	Number of methods per class	N/A

Architecture

The Smart Code Analyzer follows a modular architecture with clean separation of concerns:

┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│   CLI Interface │────│ Analysis Engine │────│ Report Generator│
└─────────────────┘    └─────────────────┘    └─────────────────┘
                              │
                    ┌─────────┼─────────┐
                    │         │         │
            ┌───────▼───┐ ┌───▼────┐ ┌──▼──────────┐
            │File       │ │Metrics │ │Code Smell   │
            │Processor  │ │Analyzer│ │Detector     │
            └───────────┘ └────────┘ └─────────────┘

Design Patterns Implementation

Pattern	Usage	Benefit
Strategy	Different analysis implementations	Flexible analysis strategies
Factory	Configuration-based component creation	Easy extensibility
Observer	Asynchronous result processing	Non-blocking operations
Command	Menu operation encapsulation	Clean command handling

Installation & Setup

Prerequisites

System Requirements

Component	Minimum	Recommended	Enterprise
Java Version	11	17+	21+
RAM	2GB	4GB	8GB+
CPU Cores	2	4	8+
Storage	100MB	500MB	2GB+

Installation Methods

Method 1: Pre-built Release (Recommended)

# Download latest release
curl -L https://github.com/SafwanGanz/code_analyzer/releases/latest/download/SmartCodeAnalyzer.jar -o SmartCodeAnalyzer.jar

# Verify installation
java -jar SmartCodeAnalyzer.jar --version

Method 2: Build from Source

# Clone repository
git clone https://github.com/SafwanGanz/code_analyzer.git
cd code_analyzer

# Build with Maven (if available)
mvn clean compile assembly:single

# Or build manually
javac -d build -cp src src/main/java/com/codeanalyzer/**/*.java
jar cfm SmartCodeAnalyzer.jar MANIFEST.MF -C build .

Method 3: Docker (Coming Soon)

# Pull Docker image
docker pull safwanganz/smart-code-analyzer:latest

# Run analysis
docker run -v /your/project:/workspace safwanganz/smart-code-analyzer

Usage Guide

Interactive Menu System

Smart Code Analyzer v2.0
Professional Edition
===========================

Select an option:
1. Analyze Directory          5. Show Complexity Metrics
2. Analyze Single File        6. Analyze Dependencies  
3. Generate Analysis Report   7. Export Results
4. Find Code Smells          8. Exit

Command Line Examples

Analyze a Spring Boot Project

java -jar SmartCodeAnalyzer.jar

# Choose: 1 (Analyze Directory)
Choice: 1

# Enter project path
Enter directory path: /workspace/my-spring-project/src/main/java

# Output:
Analyzing directory: /workspace/my-spring-project/src/main/java
Processing files... 100% (127/127)
Using 8 threads for parallel processing
Analyzing complexity patterns...
Detecting code smells...
Mapping dependencies...

Analysis complete! 
Processed 127 files in 2,341 ms
Found 23 potential improvements
Average maintainability: 78.5/100

Single File Analysis

Choice: 2
Enter Java file path: /path/to/UserService.java

=== FILE ANALYSIS ===
File: UserService.java
Lines: 156 | Classes: 1 | Methods: 8
Complexity: 12 (Moderate)
Maintainability: 73.45/100 (Good)

Recommendations:
• Consider breaking down the processUserData method (78 lines)
• Remove 3 TODO comments
• Replace magic number 10 with named constant

Features Deep Dive

Code Smell Detection

The analyzer detects 15+ types of code smells with configurable patterns:

Smell Type	Description	Detection Pattern	Severity
Long Method	Methods exceeding 500 characters	\{[^}]{500,}\}	High
Magic Numbers	Hardcoded numeric literals	\b(?<!\.)\\d{2,}\b	Medium
TODO Comments	Unfinished implementation markers	//\s*TODO	Low
Debug Statements	System.out.println usage	System\.out\.print	Medium
Empty Catch	Exception handling without action	catch\s*\([^)]+\)\s*\{\s*\}	High
God Class	Classes with excessive responsibilities	class\s+\w+[^}]{2000,}	High
Feature Envy	Excessive method chaining	(\w+\.){3,}\w+	Medium

Complexity Analysis Scales

Cyclomatic Complexity Levels

Range	Level	Description	Action Needed
1-5	Low	Simple, easy to test	Maintain current quality
6-10	Moderate	More complex, manageable	Monitor for growth
11-20	High	Complex, difficult to test	Consider refactoring
21+	Very High	Immediate attention needed	Refactor immediately

Maintainability Index Scale

Maintainability Score (0-100):

85-100  ████████████████████ Excellent    
70-84   ████████████████     Good        
50-69   ████████████         Needs Work  
0-49    ████████             Legacy Code  

Dependency Analysis Features

• Import Mapping: Complete tracking of all import statements
• Package Usage Analysis: Identification of most frequently used packages
• External Dependency Detection: Highlights non-JDK dependencies
• Circular Dependency Detection: Identifies potential architectural issues
• Dependency Tree Visualization: Visual representation of component relationships

API Reference

Core Classes

AnalysisEngine

The central orchestration class for all analysis operations.

public class AnalysisEngine {
    // Asynchronous directory analysis
    public CompletableFuture<AnalysisResult> analyzeDirectory(Path directory)
    
    // Single file analysis  
    public CompletableFuture<FileAnalysis> analyzeFile(Path file)
    
    // Generate comprehensive report
    public AnalysisResult generateReport()
    
    // Graceful shutdown with resource cleanup
    public void shutdown()
}

FileAnalysis

Represents detailed analysis results for a single file.

public class FileAnalysis {
    public String getFilePath()                        // File path information
    public CodeMetrics getMetrics()                    // Basic code metrics
    public ComplexityMetrics getComplexityMetrics()    // Complexity analysis data
    public Map<String, Integer> getCodeSmells()        // Detected code smells
    public double getMaintainabilityIndex()            // Maintainability score
    public List<String> getDependencies()              // File dependencies
    public QualityGrade getOverallGrade()              // Overall quality assessment
}

AnalysisResult

Aggregated results for multiple files with summary statistics.

public class AnalysisResult {
    public int getTotalFiles()                         // Total analyzed files
    public double getAverageComplexity()               // Average complexity score
    public List<FileAnalysis> getTopComplexFiles(int limit)  // Most complex files
    public int getTotalCodeSmells()                    // Total code smell count
    public Map<String, Integer> getCodeSmellSummary()  // Code smell distribution
    public TechnicalDebtSummary getTechnicalDebt()     // Technical debt analysis
}

Analyzer Interfaces

ComplexityAnalyzer Interface

public interface ComplexityAnalyzer {
    ComplexityMetrics analyze(String content);
    ComplexityGrade calculateGrade(ComplexityMetrics metrics);
}

CodeSmellDetector Interface

public interface CodeSmellDetector {
    Map<String, Integer> detectSmells(String content);
    List<CodeSmellInstance> getDetailedSmells(String content);
}

DependencyAnalyzer Interface

public interface DependencyAnalyzer {
    List<String> analyzeDependencies(String content);
    DependencyGraph buildDependencyGraph(List<FileAnalysis> analyses);
}

Configuration

Analysis Configuration

The AnalysisConfiguration class provides centralized settings management:

public class AnalysisConfiguration {
    // Thread pool configuration
    public static int getThreadPoolSize()
    
    // Code smell detection patterns
    public static Map<String, Pattern> getCodeSmellPatterns()
    
    // Complexity analysis thresholds
    public static ComplexityThresholds getComplexityThresholds()
    
    // File inclusion/exclusion rules
    public static FileFilterSettings getFileFilters()
    
    // Report generation settings
    public static ReportConfiguration getReportSettings()
}

Customizing Code Smell Detection

Add custom code smell patterns:

private static Map<String, Pattern> initializeCodeSmellPatterns() {
    Map<String, Pattern> patterns = new HashMap<>();
    
    // God Class detection
    patterns.put("God Class", 
        Pattern.compile("class\\s+\\w+[^}]{2000,}"));
        
    // Feature Envy detection  
    patterns.put("Feature Envy", 
        Pattern.compile("(\\w+\\.){3,}\\w+"));
        
    // Custom security patterns
    patterns.put("Hardcoded Password", 
        Pattern.compile("password\\s*=\\s*[\"'][^\"']+[\"']"));
        
    return patterns;
}

Thread Pool Configuration

Customize thread pool settings for optimal performance:

// Default configuration based on system capabilities
private static final int DEFAULT_THREAD_POOL_SIZE = 
    Runtime.getRuntime().availableProcessors();

// Custom configuration
System.setProperty("analyzer.threads", "8");
System.setProperty("analyzer.queue.size", "1000");
System.setProperty("analyzer.timeout", "300");

Performance

Benchmark Results

Performance metrics across different project sizes:

Project Size	Files	Processing Time	Memory Usage	Throughput
Small	45	1.2s	128MB	37 files/s
Medium	156	4.8s	256MB	32 files/s
Large	743	18.3s	512MB	40 files/s
Enterprise	2,451	67.2s	1GB	36 files/s

Performance Optimization

Memory Optimization

# For large projects
java -Xmx4g -XX:+UseG1GC -jar SmartCodeAnalyzer.jar

# Monitor GC performance
java -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -jar SmartCodeAnalyzer.jar

# Profile memory usage
java -XX:+HeapDumpOnOutOfMemoryError -jar SmartCodeAnalyzer.jar

Thread Pool Tuning

// Optimize for CPU-bound tasks
System.setProperty("analyzer.threads", String.valueOf(Runtime.getRuntime().availableProcessors()));

// Optimize for I/O-bound tasks
System.setProperty("analyzer.threads", String.valueOf(Runtime.getRuntime().availableProcessors() * 2));

// Custom queue configuration
System.setProperty("analyzer.queue.size", "1000");
System.setProperty("analyzer.timeout", "300");

File System Performance Tips

• Use SSD storage for better I/O performance
• Exclude unnecessary directories (test, target, build)
• Process files in batches for very large codebases
• Enable file system caching for repeated analyses

Extending the Tool

Adding Custom Analyzers

Example: Security Analyzer

public class SecurityAnalyzer {
    private static final Pattern SQL_INJECTION = 
        Pattern.compile("String\\s+sql\\s*=.*\\+.*");
    
    private static final Pattern HARDCODED_PASSWORD = 
        Pattern.compile("password\\s*=\\s*[\"'][^\"']{8,}[\"']");
    
    private static final Pattern WEAK_CRYPTO = 
        Pattern.compile("DES|MD5|SHA1");
    
    public SecurityMetrics analyze(String content) {
        SecurityMetrics metrics = new SecurityMetrics();
        
        // Detect SQL injection vulnerabilities
        metrics.setSqlInjectionRisks(countMatches(SQL_INJECTION, content));
        
        // Detect hardcoded passwords
        metrics.setHardcodedPasswords(countMatches(HARDCODED_PASSWORD, content));
        
        // Detect weak cryptographic algorithms
        metrics.setWeakCryptoUsage(countMatches(WEAK_CRYPTO, content));
        
        return metrics;
    }
}

Integration with Analysis Engine

public class EnhancedFileProcessor extends FileProcessor {
    private final SecurityAnalyzer securityAnalyzer = new SecurityAnalyzer();
    
    @Override
    public FileAnalysis processFile(Path file) throws IOException {
        FileAnalysis analysis = super.processFile(file);
        
        // Add security analysis
        String content = Files.readString(file);
        SecurityMetrics securityMetrics = securityAnalyzer.analyze(content);
        analysis.setSecurityMetrics(securityMetrics);
        
        return analysis;
    }
}

Custom Report Formats

JSON Report Generator

public class JsonReportGenerator extends ReportGenerator {
    private final Gson gson = new GsonBuilder()
        .setPrettyPrinting()
        .setDateFormat("yyyy-MM-dd HH:mm:ss")
        .create();
    
    public void exportToJson(AnalysisResult result, String outputPath) throws IOException {
        JsonReportModel report = JsonReportModel.builder()
            .timestamp(Instant.now())
            .summary(createSummary(result))
            .fileAnalyses(result.getFileAnalyses())
            .codeSmellDistribution(result.getCodeSmellSummary())
            .complexityDistribution(result.getComplexityDistribution())
            .build();
        
        try (FileWriter writer = new FileWriter(outputPath)) {
            gson.toJson(report, writer);
        }
    }
}

HTML Report Generator with Charts

public class HtmlReportGenerator extends ReportGenerator {
    public void exportToHtml(AnalysisResult result, String outputPath) throws IOException {
        VelocityEngine velocityEngine = new VelocityEngine();
        Template template = velocityEngine.getTemplate("report-template.html");
        
        VelocityContext context = new VelocityContext();
        context.put("result", result);
        context.put("chartData", generateChartData(result));
        context.put("generatedAt", LocalDateTime.now());
        
        try (FileWriter writer = new FileWriter(outputPath)) {
            template.merge(context, writer);
        }
    }
}

Troubleshooting

Common Issues and Solutions

OutOfMemoryError

Problem: java.lang.OutOfMemoryError: Java heap space

Root Causes:

• Analyzing very large files or projects
• Insufficient heap memory allocation
• Memory leaks in custom analyzers

Solutions:

# Increase heap size
java -Xmx4g -jar SmartCodeAnalyzer.jar

# Use memory-efficient garbage collector
java -XX:+UseG1GC -XX:MaxGCPauseMillis=200 -jar SmartCodeAnalyzer.jar

# Enable heap dump for analysis
java -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/tmp/ -jar SmartCodeAnalyzer.jar

# Process files in smaller batches
java -Danalyzer.batch.size=50 -jar SmartCodeAnalyzer.jar

File Access Permission Issues

Problem: java.nio.file.AccessDeniedException

Solutions:

# Fix file permissions (Linux/Mac)
chmod -R 755 /path/to/project

# Run with appropriate permissions (if necessary)
sudo java -jar SmartCodeAnalyzer.jar

# Windows: Run Command Prompt as Administrator

Thread Pool Exhaustion

Problem: java.util.concurrent.RejectedExecutionException

Solutions:

# Reduce concurrent processing
java -Danalyzer.threads=4 -jar SmartCodeAnalyzer.jar

# Increase queue size
java -Danalyzer.queue.size=2000 -jar SmartCodeAnalyzer.jar

# Increase timeout
java -Danalyzer.timeout=600 -jar SmartCodeAnalyzer.jar

Performance Issues

Symptoms: Analysis takes unusually long time

Common Causes and Solutions:

1. Large Files:

   # Skip very large files
   java -Danalyzer.max.file.size=1000000 -jar SmartCodeAnalyzer.jar

2. Complex Regex Patterns:

   # Disable expensive patterns
   java -Danalyzer.disable.patterns=long_method,god_class -jar SmartCodeAnalyzer.jar

3. Insufficient Memory:

   # Increase memory allocation
   java -Xmx8g -jar SmartCodeAnalyzer.jar

4. I/O Bottlenecks:

   # Exclude unnecessary directories
   java -Danalyzer.exclude=test,target,build,node_modules -jar SmartCodeAnalyzer.jar

Debug Mode and Logging

Enable Verbose Logging

# Debug level logging
java -Dlogging.level=DEBUG -jar SmartCodeAnalyzer.jar

# Trace level for detailed analysis
java -Dlogging.level=TRACE -jar SmartCodeAnalyzer.jar

# Log to file
java -Dlogging.file=/tmp/analyzer.log -jar SmartCodeAnalyzer.jar

Performance Profiling

# Enable JVM profiling
java -XX:+PrintCompilation -XX:+UnlockDiagnosticVMOptions -XX:+PrintInlining -jar SmartCodeAnalyzer.jar

# Monitor thread activity
java -XX:+PrintGCApplicationStoppedTime -XX:+PrintGCApplicationConcurrentTime -jar SmartCodeAnalyzer.jar

# Flight recorder (Java 11+)
java -XX:+FlightRecorder -XX:StartFlightRecording=duration=60s,filename=analysis.jfr -jar SmartCodeAnalyzer.jar

Contributing

How to Contribute

We welcome contributions from the community! Here are several ways you can help:

Report Bugs Found an issue? Help us improve by reporting it. Create Bug Report

Suggest Features Have an idea for improvement? Request Feature

Submit Code Ready to contribute code? View Contributing Guide

Development Setup

# Fork the repository
gh repo fork SafwanGanz/code_analyzer

# Clone your fork
git clone https://github.com/YOUR_USERNAME/code_analyzer.git
cd code_analyzer

# Create feature branch
git checkout -b feature/amazing-new-feature

# Make changes and commit
git commit -m "Add amazing new feature"

# Push and create PR
git push origin feature/amazing-new-feature

Pull Request Guidelines

Before submitting a pull request, please ensure:

• Tests Pass: Run mvn test to verify all tests pass
• Code Style: Follow existing code style and formatting
• Documentation: Update documentation for new features
• Performance: Consider performance impact of changes
• Backward Compatibility: Maintain API compatibility where possible

Code Style Guidelines

• Use meaningful variable and method names
• Follow Java naming conventions
• Add JavaDoc comments for public APIs
• Include unit tests for new functionality
• Maintain consistent indentation (4 spaces)

Issue Labels

We use labels to categorize issues:

• - Something isn't working
• - New feature or request
• - Good for newcomers
• - Extra attention is needed
• - Improvements or additions to documentation

License

[

This project is licensed under the MIT License. See the LICENSE file for details.

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Support the Project

If this tool helps you write better code, consider supporting the project:

Connect With the Team

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Smart Code Analyzer - Empowering developers with actionable code quality insights
Made with care by SafwanGanz and contributors